I hope, for her sake, that it was quick and final. They were supposed to be smoke bombs, not rockets, right? How would anyone know what speed they’d travel at? Has to be a (Chi-Comm) guess.
Maybe the rocket and smokebomb assembly lines got confused. Rockets also usually have pointy tops. This would have had a blunt shape. 150 mph might actually be too low an estimate for the speed of the smoke bomb, or piece of it, that penetrated the victim (and most bizarrely).